Draft-equalizer.



No. 811,703. PATENTED FEB. 6, 1906. S. E. DAVIS. DRAFT EQUISLIZLR.r

APPLICATION FILED FEB. 7. 1905.

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UNITED srarns PATENT FFIGE.

l no. 811,703.

Specification of Letters Patent.

Patented Feb. 6, 1906.

Application led February 7, 1905. Serial No. 244,534.

To LZZ whom, it may concern.:

Be it known that I, SPENCER E. DAvIs, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Draft-EquaL izers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to draft-equalizers, and has for its object to improve the same in the several particulars hereinafter noted.

In the accompanying drawings, which illustrate my invention, like characters indicate like parts throughout the several views.

Figure l is a plan view with some parts broken away, showing my improved equalizer applied to the pole and frame of an agricultural implement, such as a disk drill or a eultivator. F 2 is a section en the line x2 of Fig. 1, and Fig. 3 is a section on the line r3 x3 of Fig. l.

The numeral l indicates the pole, and the numeral 2 a portion of the frame of a disk drill or cultivator. The frame-section 2 serves as a cross-bar rigidly secured to the pole. To the cross-bar 2 on opposite sides of the pole are rigidly secured sheave-brackets 3, in which are j ournaled guide-sheaves 4. i Rigidly secured to the under side of the pole is a metal strap 5, between the forward end of which and the pole is pivoted a vibratory equalizing-lever 6, a bolt '7 being passed through the said parts to afford a pivot for said lever. The lever 6, as shown, projects rearward from its pivot and is provided with two rows of perforations 6a.

The numeral 8 indicates two-horse evencrs, the beams of which are attached to the outer ends of a flexible connection, preferably made up of chains 9 and rods 10. The chains 9 run over the sheaves 4, and the inner ends of the rods l0 are adapted to be hooked into any of the perforations 6a of the equalizinglever 6. When the rods 10 are hooked into perforations 6a, that are located equidistant from` the pivot of the lever 6, it is evident that the draft strains on the opposite side of the pole will be exactly equalized. This is what will usually be desired when the same number of horses (two, for instance) are hitched to the opposite ends of 'theilexible draft connection, made up of the chains 9 and rods 10. If, however, one team is lighter than the otherJ that team may be given either a very slight or a considerable advantage over the heavier team by attaching the rod 10 on the light-team side in a perforation 6, that is farther from, the pivot of the lever 6. To equalize with one horse on one side of the pole and with two on the other side, the rod l() on the two-.horse side should be coupled into a hole 6a, that is only one-half the distance from the pivot of the lever 6, as is the hole into which is coupled the rod on the one* horse side. Again, this exact equalization may be varied by shifting one or the other of the rods 10 into a hole 6L slightly out of the relative positions just noted. The lever 6 normally lies parallel to the pole l and approximately at a right angle to the rods 10.

The device described ,is of small cost, af fords means for all desirable cqualizations and distributions of the draft strains, and is in all respects extremely eflicient for the pur poses had in view. This said device is capable of modification within the scope of my invention as herein set forth and claimed.

What I claim, and desire to secure by Let- 1ters Patent of the United States, is as folows:

lIn a machine of the character described, the combination with a pole and a frame havino' a transversely-extended front bar 2 rigidIy secured to said pole, of an equalizing-lever 6 pivoted to said pole with its free end turned rearward and terminating slightly forward of said bar 2, said lever having two parallel rows of perforations, the sheavebearings 3 secured to said frame-bar 2 on opposite sides of the pole, the sheaves 4 mounted on said sheave-bearings 8, the rods 10 adjustably engaged with the perforations of said equaliZing-lever 6, and the chains 9 attached to the outer ends with devices to which horses may be hitched, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

SPENCER E. DAVIS'.

Witnesses:

H. D. KILeonn, F. D. MERCHANT.,

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